So to be perfectly blunt, I was initially put off by the looks of the game - the basic thumbnail, the default Unity buttons, the slightly blurry default Unity text (I’d recommend switching to TextMesh Pro), and a generally uninspired interface with a lot of dead space, and a couple issues with text going outside its containers. Sorry, I know this is a bit harsh but first impressions make a big difference so its important to get it right.
That all said, I do really like the whole premise of eras being levels, and progressing through them. I think this could be a pretty strong game, if the interface is improved. In addition to what I said above, some QoL features could go a long way - how much currency am I making per second? What goal do I have to hit to move to the next era? etc.
The balancing also isn’t perfect. It’s a bit slow (especially since the goal for each era is unknown), and the beginning of each era is identical, which gets stale.